초록 ▼

A porous ceramic monolith for use as a filter (1) for Diesel exhaust gases has inlet bores (61) closed at an outlet end (8) of the filter (1) and outlet bores (62) closed at an inlet end (7) of the filter. The inlet and outlet bores (61 and 62) are interlaced with each other and separated from each

A porous ceramic monolith for use as a filter (1) for Diesel exhaust gases has inlet bores (61) closed at an outlet end (8) of the filter (1) and outlet bores (62) closed at an inlet end (7) of the filter. The inlet and outlet bores (61 and 62) are interlaced with each other and separated from each other by porous partition walls (3) each having gas-permeable pores therein. The inlet and outlet bores have open ends (9) diverged axialy outwardly of the bores to increase opening ratio in each end of the filter (1) thereby decreasing the pressure loss across the filter.

대표청구항 ▼

A porous ceramic monolith having an inlet end wall and an outlet end wall and including a plurality of bores having substantially parallel axes and separated from each other by porous partition walls, some of said bores being closed by said inlet end wall and opened in an outer end face of said outl

A porous ceramic monolith having an inlet end wall and an outlet end wall and including a plurality of bores having substantially parallel axes and separated from each other by porous partition walls, some of said bores being closed by said inlet end wall and opened in an outer end face of said outlet end wall to provide outlet bores and the other of said bores being closed by said outlet end wall of said ceramic monolith and opened in an outer end face of said inlet end wall to provide inlet bores, said inlet and outlet bores being interlaced such that a flow of fluid entering said inlet bores is allowed to pass through the pores in said partition walls into said outlet bores, wherein the open ends of at least said inlet bores are diverged outwardly and wherein each of said end walls has a first thickness measured in the axial direction of said bores and each of said partition walls has a second thickness measured in a direction perpendicular to the axes of said bores, said first thickness being greater than said second thickness.